Recent content by makphi

I don't get it. So how do we arrive at this conclusion using the Lorentz transformation equations: "... If, on the contrary, we had considered a metre-rod at rest in the x-axis with respect to K, then we should have found that the length of the rod as judged from K1 would have been...

I just substituted the values of x=0, x=1 in the first equation (see attached) & got the difference (X1'-X0') for the length of the metre rod in K'. This turned out to be the reciprocal i.e 1/(√(1-(v^2)/(c^2))). I suspect my logic is wrong but I don't know how. Can you show me how to arrive at...

Exactly! Is that wrong?

I have to admit that my "best" math days are long gone. That said, I wonder if anyone can help me? I'm stuck in part 1 of Einstein's book on 'Relativity, The Special & General Theory: The behaviour of measuring rods & clocks in motion', specifically on the second equation : √(1-v^2/c^2) used to...